Incandescent mantle.



Patented Jan. 9, I900.

C. P. SCHULTZ.

INCANDESGENT IJIANTLE.

(Application filed Dec. 1, 180B:-

N0 Model.)

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UNITED STATES PATENT OFFICE.

CHARLES P. SCHULTZ, OF PAWTUCKET, RHODE ISLAND.

INCANDESCENT MANTLLE.

SPECIFICATION forming part of Letters Patent No. 641,240, dated January9, 1900.

Application filed December 1, 1898. Serial No. 698,015. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES P. SCHULTZ, a citizen of the United States,residing at Pawtuoket, in the State of Rhode Island, have invented a newand useful Improvement in Incandescent Mantles, of which the followingis a specification.

The incandescent mantles for gas-burners as heretofore constructed areliable to shrink diametrically out of their proper shape in use and tobreak; and it is the object of my invention to provide suitable stays orsupports against such distortion andto strengthen the mantle and also toincrease the volume of light produced; and my invention consists in thecombination of the external body of the mantle with internallongitudinal partitions, which serve to brace the external body againstcontraction when employed for lighting purposes and by theirincandescence add mate-.

rially to the volume of light given out by the mantle.

In the accompanying drawings, Figure 1 represents a side elevation of agas-burner provided with my improved incandescent mantle. Fig. 2represents a longitudinal section of the mantle. Fig. 3 represents atransverse section taken in the line 3 3 of Fig. 2. Figs. 4 and 5 aretransverse sections representing modifications in a number of supportingstays or partitions. Fig. 6 is a longitudinal section showing amodification. Fig. 7 is a cross section taken in the line 7 7 of Fig. 6.

In the drawings, A represents the Bunsen burner, and B the Wire supportfor the upper end a of the mantle C, the said mantle being made of thematerials heretofore employed and well known in the art. The externalbody I) of the mantle is made in the usual form, and the internal cavityof the said body is provided with one or more diametrical orradially-arranged longitudinal stays or partitions c, which serve tobrace the body I) to its original form when the mantle is in use forlighting purposes and which divide the mantle into two or morelongitudinal spaces or fiues, the said stays or partitions 0 being madein any desired number, as illustrated by the modifications shown inFigs. 4 and 5. These partitions may be inserted in any suitable mannerand are made shorter at their lower ends than the length of the body bof the mantle, and the said partitions by resting at their lower edges fupon the top 01 of the burner will constitute an additional support tothe mantle which may be employed without the wire support B, thedownward extension 6 of the body 19 below the lower edge f of p thepartitions serving to retain the mantle in position upon the burner A.

The mantle, as shown in Fig. 1, is suspended by means of the transverseloop g, secured at its opposite ends to the upper end h of the body I)of the mantle, as usual; but I prefer to attach the loop g to thepartition, as shown in Figs. 6 and 7, the said loop being preferablyattached to the diametrical partition 0 at its center line, with theends g of the cord or wire of which the loop is formed extendingdownward along the axis of the partition, thus serving to strengthen thesame.

I claim as my invention- 1. An incandescent mantle provided with anincandescent external body, and one or more incandescent diametricallyor radially directed longitudinal partitions, adapted to increase thevolume of light given out from the mantle, substantially as described.

2. An incandescent mantle provided with an incandescent partition, andwith an external body extending below the lower edge of the partition,whereby the mantle may be supported uponthe burner without requiring asupport for the upper end of the mantle, substantially as described.

3. An incandescent mantle provided with an internal longitudinalpartition, and with a loop attached to the said partition, forsuspending the mantle over the burner, substantially as described.

CHARLES P. SCHULTZ.

Witnesses:

SooRATEs SOHOLFIELD, HARRY J. GAROEAU.

